Effect of Cr Substitution on Thermal Stability of Magnetization and Oxidation Resistance of SmFeN Compounds

We investigated the effects of Cr element substitution on thermal stability of magnetic flux and oxidation resistance of SmFeN compounds by X-ray diffraction (XRD), thermogravimetry analysis (TG), and flux aging loss measurement methods. We found that with increases in Cr substitution, the irreversi...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2008-08, Vol.44 (8), p.2082-2084
Main Authors: Jinwen Ye, Jinwen Ye, Ying Liu, Ying Liu, Xianfu Chen, Xianfu Chen, Mingjing Tu, Mingjing Tu
Format: Article
Language:English
Subjects:
Alloys
Applied sciences
Bonding
Chromium
Corrosion
Corrosion environments
Cross-disciplinary physics: materials science
rheology
Diffraction
Exact sciences and technology
Flux
HDDR
Magnetic flux
Magnetism
Magnetization
Magnets
Materials science
metal materials
Metals. Metallurgy
nitride
Other topics in materials science
Oxidation
Oxidation resistance
Physics
rare earth
Stability analysis
Thermal resistance
Thermal stability
X-ray diffraction
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Summary:We investigated the effects of Cr element substitution on thermal stability of magnetic flux and oxidation resistance of SmFeN compounds by X-ray diffraction (XRD), thermogravimetry analysis (TG), and flux aging loss measurement methods. We found that with increases in Cr substitution, the irreversible flux losses of bonded magnets made from these alloys decrease remarkably. When Cr substitution reaches 2 at%, the beneficial effect reaches a maximum; the irreversible flux loss of such bonded magnets exposed to a temperature 170degC for 2 h is only 4.97%. The oxidation resistance of SmFeN magnetic powders is also notably improved with the increased Cr substitution .
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2008.922927